I have born in Havana, Cuba in 1968 where I have lived until 1987 when I moved to the former Soviet Union to study at the Physic Department of the Moscow State University M.V. Lomonosov (МГУ). I graduated in physics at МГУ in November 1992 and received the degree of Master Of Science in Mathematical-Physics (Thesis' title: The q-Analogue of the Vibron IBM Model and the Quantum Algebra SUq(1,1), advisor: Dr. Yuri F. Smirnov) also in November 1992. Then I moved to Spain in December 1992. I got my PhD Thesis on Mathematics Generalized Polynomials and q-Polynomials: Spectral Properties and Applications (in Spanish) (advisors: Dr Francisco Marcellán and Dr. Antonio García García) in June, 1996 at the Departamento de Matemáticas, Universidad Carlos III de Madrid where I was working untill September 1998. In April 1998, I was appointed as an associate professor of Analysis (Profesor Titular) at the Departamento de Análisis Matemático of the Facultad de Matemáticas (Universidad de Sevilla). At